Coway Replacement Filter Set AP1516D Storm Whether as a spare or as replacement, the Coway Replacement Filter Set AP1516D Storm will continue to maintain a clean, breathable environment in your room. The replacement filter set for the Coway Replacement Filter Set AP1516D Storm includes: 1 x Fine dust filter - The fine dust filter effectively captures not only large dusts but also fine dusts such as pollen, mold and pet dander. 1 x Carbon deodorisation filter - The granular activated carbon deodorization filter effectively removes odors including food smells and musty house smells and harmful gases indoors. 1 x HEPA filter - The high-performance synthetic HEPA filter is excellent at removing cigarette smoke and fine dust. Filter Replacement Instructions When replacing with new filters, here are some thing to consider: During filter assembly, be sure to check the front. Only use genuine Coway filters to keep the purifier at its optimal performance. Always unplug the power plug before replacing filters. How to replace Deodorization/HEPA filters (replace every 24/12 months) Step 1. Open the front cover and remove the pre-filter and fne dust filter from the purifer, then take out the deodorization filter and HEPA filter. Step 2. Replace them with a new deodorization filter and new HEPA filter with the plastic packaging removed. Reassemble the purifer in the reverse order you disassembled it and close the front cover.